Machine for manufacturing bearing-jewels.



H. MILLER & P. MUELLER.

MACHINE FOR MANUFACTURING BEARING JEWELS.

' APPLICATION FILED OUT. 17, 1912. I

1,097,726. Patented May 26, 1914.

2 SHEETS-SHEET 1.

mm H 1' ll lll|llllll VENTORS I WW I I I I m I ATTORNEY H. MILLER 6; F. MUELLER. MACHINE FOR MANUFACTURING BEARING JEWELS.

APPLICATION FILED OUT. 17, 1912.

2 SHEETS-SHEET 2.

INVENTORS k Mam/M V q ATTORNEY Patented May 26, 1914.

TEE.

HENRY MILLER, 0F NEWARK, AND FRIEDRICH MUELLER, OF IRVINGTON, NEW JERSEY, ASSIGNORS TO WESTINGHOUSE ELECTRIC AND MANUFACTURING CUMPANY, A CORPORATION OF PENNSYLVANIA.

MACHINE FOR MANUFACTURING BEARING-JEWELS.

I Application filed Getober 1?, 1912.

Specification of Letters Patent.

Patented May 266, 191%.

Serial No. 726,267.

-Machines for Manufacturing Bearing-Jewels, of which the following is a specification.

Our invention relates to ma'chines'for manufacturing bearing jewels for watches, electric meters and similar devices, and it has for its object to provide a machine whereby bearing jewels may be manufactured more expeditiously and cheaply and more uniformly and reliably perfect than is possible when the jewels are manufactured by hand.

@ur invention is illustrated in the accompanying drawings, Figure 1 of which is a View, in front elevation, of a machine embodying the same. Fig. 2 is a view, in rear elevation, of some of the parts of the machine. Fig. 3 is-a view, in side elevation and in section. Fig. 4 is a plan view showing only a few of the parts of the machine, and Fig. 5 is a view, in side elevation and in section, of some of the parts of the machine.

The operating parts of the machine are carried by a base or standard 1 having a bifurcated upper end in which a sleeve 2 is rotatably mounted, the front end of the sleeve being provided with a flange 3 having a transverse recess for the reception of a boss 4 upon the rear face of a block The block 5 is, in turn, provided, in its front face, with a vertical recess for the reception of an extension 6 from one leg of a substantially U-shaped bracket 7 constituting a Work holder support, the said parts being clamped together by a bolt 8 that passes through the sleeve 2 and is threaded into the work holder support. A suitable amount.

of clearance is left between the sides of the bolt 8 and the sleeve 2 to permit of adjustments between the parts 3, 4 and 6 in order that the work holder support may be adjusted to its proper position.

The work holder support is provided with bearings 9 and-10 for a vertical tubular shaft 11 that has a head 12 at its upper end and carries a pulley 13 for a driving belt 14.

' upon the upper end of the tool post.

The tubular shaft 11 contains a rod 15 havmg a frusto-conical head 16 at its upper end that is seated in a correspondingly shaped portion of the head 12 of the said shaft. The upper end face of the shaft is also pro vided with a recess for the reception of the jewel 17 to be formed-into a bearing, the upper end of the shaft being split so that the frusto-conical head thereon may serve as a chuck or work holder. The lower-end of the rod 15 is threaded and is provided with a nut 18 for drawing the rod downwardly to cause the jaws of the chuck to clamp the jewel.

The sleeve 2 serves as a pivot for a tool post 19 that is mounted in the bifurcated upper end of the base 1 and is provided in its front face with a longitudinal (lovetail shaped guide recess for a vertically reciprocable tool head 20. When the machine is not in use, the tool head is locked in its uppermost position by means of a small handle 21 that is pivoted to the upper end of the tool head and may be rotated to hear The tool head provides bearings for a shaft 22 having a threaded recess at its lower end for the reception of a tool 23, a set of tools being provided that are adapted to work the jewel, in succession, from its rough to its final finished condition. The shaft 22 is provided with a pulley 24: that is driven by a belt 25, the direction of rotation of the shaft 22 being preferably opposite to the direction of rotation of the shaft 11. The shaft 22 is capable of movement longitudinally in the tool head, but is normally maintained in the position shown by means of a helical compression spring 26 that is con tained in a recess in the upper end of the tool head and surrounds a guide pin or eX- tension 27, the pressure of the spring being adjustable by means of a nut 28. A lateral boss 30 isprovided with bearings for a shaft 31 that is driven by a pulley 32 and is provided at one end with a worm gear 33 that meshes with a gear 34. The gear 34 is mounted upon a short hollow shaft 35 having a flange 36 at one end and carrying a disk 37 at its other end, a connecting rod lOO end to an. arm 39 that is fixed to sleeve 3.

The rotation of theshaft 35 therefore serves,

through the parts 37, 38 and 39, to impart a rotary reciprocating motion to the sleeve 2 and the tool holder support.

The front face of the flange 36 upon the shaft 35 is provided with a dove-tail shaped guide recess for a block 40 of somewhat less length than the diameter of the said flange,

the said block being pivotally connected to one end of a connecting rod 41, the other end of which is pivotally connected to a boss 42 upon the tool post 19. The block 40 is adapted to be moved in the guide recess by means of a bell crank lever 43 that is mount ed upon a pin 44 extending transversely of and carried by the hollow shaft 35, the ends of the said bell crank lever being forked for engagement with pins 45 and 46, respectively, the former of which is carried by the block 40. The pin 46 is carried by a sleeve 47 that is mounted upon the shaft 35 and is ca able of movement longitudinally thereo the said -sleeve being provided with a circumferential recess for the receptionof pinswarried at the extremities of the prongs of a forked lever 48 that is pivoted at its lower end to the base of the machine. The lever 48 is actuated, for the purposeof moving the sleeve 47 longitudinally of the shaft35, by means of a screwthreaded rod 49 that is connected to the lever in a manner to permit of its rotation. The

- rod 49 is screwed into a stationary nut 50- 85 and is adapted to be rotated, for the purpose ofactuating the lever 48, by means of a knurled head 51 that carries a pin 52 passing through a slot in the outer end of the rod, the nut 50 being provided with a circumferential recess for the reception of a screw. 53

that is screwed into and secured to a c lindrical shell portion of the head 51 within which the nut 50 is partially located. When the knurled head 51 is rotated, the lever 48 causes the sleeve 47 to move longitudinally of the shaft 35, thereby actuating the bell crank lever 43 so as tomove the block 40 in the guide recess in the flange 36. In this manner, the eccentricity of the connection ofthe rod 41 to the flange 36 may be varied,

and thereby also the amount "of reciprocating movement of the tool post.

In the operation of the machine, a jewel 17 to be shaped into a bearing is first mount- -55 ed in the chuck at the upper end of the rod 15, the parts being preferably so adjusted that the center of the jewel is on a line with the axis of reciprocating movement of the work holder and tool head. After a tool so has been inserted in the'lower end of the 55 eating movement of-the tool head is prothe tool holder.

vided for by adjustment of the head 51. After the jewel is roughly shaped, other tools may be employed for gradually shaping it closer and closer to its finished form, and suitable polishing tools may finally be employed. By reason of the reciprocation of both the tool post and the mork holder, and of the rotation of both the jewel and the tool holders, the jewel and the tool are brought into engagement at varying angles during their. rotation, with the result that the jewels may be perfectly finished, and, since all of them may be treated alike, a greater reliability and uniformity of the product may be se- 'cured,than with the jewels that are finished by hand.

We claim as our invention: 7

1. A jewel finishing machine comprising a rotatable jewel holder, and a rotatable tool holder,'the said jewel and tool holders being revolubly reciprocable' about an axis passing substantially through the jewel.

2. A jewel finishing machine comprising a rotatable jewel holder, and a rotatable tool holder, the said jewel and tool holders being revolubly reci rocable.

3. A jewel finis ing machine comprising a rotatable jewel holder, and a rotatable tool holder that is resiliently mounted and movable toward, and away from, the, jewel holder, the said jewel and tool holders being revolubly reciprocable about an axis. passing substantially through the jewel.

4. A jewel finish ng machine comprising a rotatable jewel holder, and a rotatable tool holder that is movable toward, and away from,.the jewel holder, the said jewel and tool holders being revolubly reciprocable about an axis passing substantially through the jewel. 1

5. A jewel-finishing machine comprising a rotatable jewel holder, and a rotatable tool holder that is movable toward, and away from, the jewel holder, the said jewel and tool holders being revolubly reciprocable.

6. A jewel finishing machine comprising a rotatable jewel holder, a rotatable too holder, the. said holders being revolubly reciprocable about an axis passing substan- 115 tially through the jewel and means for varying the amplitude of reciprocationof 7. A jewel finishing machine'com rising a rotatable jewel holder, a rotatable tool holder, the said holders being revolubly re-' ciprocable and means for varying the amplitude of reciprocation of the tool holder.

8. A jewel finishing machine comprising a rotatable jewel holder, and a rotatable tool 1 holder,- the said holders being simultaneously revolubly reciprocable in the same directlon'about an axis passing substantially through the jewel.

9. A jewel finishing machine comprising a rotatable jewel holder, a revoluloly reciprosubscribed our nemes this 27th day ofcable supporting frame therefor, a rotatable Sept, 1912. tfiol goldecf, a revoluhly recfiprocahalefhead t ere or, rivin eccentrics or sai reme '5 and said head, ndmeans for varying the FRIEDRICH R throw of the eccentric that actuates the tool Witnesses: V

heed. EDWARD LEONARD,

In testimony whereof, We have hereunto C. C. CRoFFT.

HENR Y MILLER. 

